GEOMETRICAL OPTICS

The time interval after which the voltage repeats Its value is known as__________

Ohm Is the unit of ____________

If the resistance of 2-ohm and 4-ohm are connected in Parallel, the equivalent resistance will be _________

All electrical appliances are connected in parallel to each other between the main live and neutral wire to get ________

The combined resistance of two identical resistors, connected in series is 8 Ω. Their combined resistance in a parallel arrangement will be _______________

Three resistance 5000, 500 and 50 ohms are connected in series across 555 volts mains. The current flowing through them will be _________

If we increase the cross-sectional area of the wire to double of its original area. It resistance will become_______

When resistors are connected in series, the equivalent resistance is equal to ________

the conventional current of positive charges flows from a point of _________

The number of cycles completed by current in one second is called its_______

The property of a substance which opposes the flow of current through it is called____

If we increase the length of a wire to four times of its 2. length, what will be its resistance?

If a current I ampere flows through a resistance R in time seconds, then the energy supplied will be ______

• W =IRt
• W=I²Rt
• W= IR²t
• W=IRt²

Which Option is Correct ?

A resistance which is connected with the galvanometer in order to convert it into ammeter should have _______

Safety device used in place of fuse is _________

The SI unit of specific resistance is _________

• Ω - m
• Ω – m
• Ω – m^-1
• Ω – m^-2

Which Option is Correct ?

Ab electric current in conductors in due to the flow of _________

If a charge ‘Q’ flows through any cross-section of the conductor in time ‘t’ second the current ‘I’ is given by ______

The direction of conventional current flowing in a circuit is ________

Ohm's Law Is applicable to ________

The rate of flow of electric charge through any cross-sectional area is called ________

The value of current passing through a conductor is directly proportional to the_______

In series circuit, the magnitude of current that flows through each resistor is _________

In electrolyte, current is produced due to the flow of _____________

The equivalent current of positive charges which flows through a conductor is known as ______

When the temperature of a conductor is raised, its resistance _____________

A small wire connected in series with the live wire is called ________

Electrical energy is commonly consumed in very large quantity and hence a large unit of energy is required which is known as ________

One watt is equal to_____

• Js
• Js^-1
• J²s
• sJ^-1

Which Option is Correct ?

The SI unit of electric current is ____________

In metals, current is produced only due to the flow of_____________

If the needle of galvanometer shows some deflection, it would indicate the _________

At a certain temperature, the resistance of a wire is inversely proportional to its_____

If a potential of 220V is applied across a conductor and a current of 2A flu through it. What would be the resistance of the conductor?

The Instrument with which we can detect the presence of current in a circuit ls known as ______

If we double both the current and the voltage in a circuit while keeping its resistance constant, the power_____________

The wire grounded in the earth is called ___________

What happens to the intensity or the brightness of the lamps connected in series as more and more lamps are added?

The series resistance which is connected with galvanometer to convert it into voltmeter usually has value in_____________

In order to measure the current in a circuit, ammeter should be connected ________

Kilowatt - hour is a unit of ______

One kilowatt-hour Is equal to ____________

The energy supplied In driving one coulomb of charge round a complete circult in which the cell is connected is called __________

Heat energy dissipated in a resistor R when connected to a battery of V volts and current I ampere flowing through it for time t is given by __________

• I²R
• IRt
• VIt
• I²Rt

Which Option is Correct ?

The potential difference can be directly measured by the instrument known as _______

If the resistors are connected in parallel, then ___________

The relation V=IR represents_______

A good voltmeter is that which draws _______

Which of the following represents an electric current?

• Erg C^-1
• Cs^-1                      
• J S^-1
• Dyne S^-1

Which Option is Correct ?

What is the voltage across a 6Ω resistor when 3A of current passes through it?

How will you calculate power from current (I) and voltage (v)?

• power =1/V
• power = VI
• power = V²I
• power = VI²

Which Option is Correct ?

Electric potential and E.M.F ______________

The resistance of a conductor through which a current of one ampere is Mowing when the potential difference across its ends is one volt _______

The potential drop across each of resistors will be same in ________

Electrical energy is measured in_____________

The resistance of a conductor does not depend on its________

The resistances are connected end to end and provide only one path for current in ________

Why should household appliances be connected in parallel with the voltage source?

The frequency of A.C used in our houses is _________

Volt is a unit of_________

In electricity we assume that electric current is always flow due to the flow of _______

Thermistor is_______

When current I is flowing through a resistance R the electrical power that generates heat in the resistance is given by _________

The resistance of an ammeter should be _________

The current which always flows in one direction is called ______

What is the power rating of a lamp connected to a 12V source when it carries a current of 2.5A?

If 1 ampere current flows through 2-M long conductor, the charge flow through this in 1-hour will be _________

The energy required to move a charge from one point to another in the circuit is called _____

The direction of the electronic current in the closed circuit is ________

The SI unit of electrical power is _______

If we increase the temperature of a conductor, its resistance will_____

The current constituted by negative charges flows from a point of ________

In parallel circuit, the magnitude of current that flows through each resistor will be _______

The resistance of a meter cube of the substance is called_______

In order to detect the current, galvanometer is connected _______

The amount of energy supplied by current in unit time is known as _________

The conventional current Is due to the flow of ___________

The current due to negative charges and an equivalent current due to positive charges always flow in the __________

Which one of the following bulbs has least resistance?

A galvanometer is a very ______

The electronic current is due to the flow of __________

Ohm Is defined as ________

• Volt / Coulomb or VC^-1
• Volt/Ampere or VA^-1
• Ampere/Volt or AV^-1
• Ampere x Volt or A x V

Which Option is Correct ?

When we double the voltage in a simple electric circuit, we double the __________

In liquids and gases, the current is due to the motion of ________

Circuit breaker works on the principle of ____________

The graphical representation of Ohm’s law is _________

The current which changes its direction again and again is called_______

Energy is produced to transfer the electrons from positive terminal of the battery to the negative terminal by the _________

Voltmeter is always connected in a circuit in _______

One coulomb per second is equal to __________

If three resistances of 60 each are connected in series combination. What will be the equivalent resistance?

When ammeter is connected in the circuit, the positive terminal of ammeter should be connected with the _____

The wire at zero potential is called_____

When Q coulomb of charge flows between the two points having potential difference of V volts then the energy in joules is represented by________

At a certain temperature, the resistance of a wire is directly proportional to its_____

Free electrons are ______

Insulated covered wire is called__________

The energy supplied W = I²Rt is the mathematical expression for _______

An additional wire used in devices having the metallic bodies is_______

The wire at certain potential is called_________

The current through a metallic conductor is due to the motion of _________

Batteries convert _______

When we connect a battery across a conductor, the energy is provided to the charges in the conductor by the _________