10th Class Physics Important MCQs Chapter No.5 Current Electricity

The electric power enter in our house through....

The potential difference between the live wire and neutral wire is;

A source of e.m.f is;

In bulb current is transformed into;

Due to flow of charges, produces;

In series combination of resistors, the current passing through each resistor is;

Materials that obey Ohm's law and hence have a constant resistance over a wide range of voltages are;

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

They are good conductors of electricity and offer less resistance.

Which voltage is fatal?

Which runs generator to produce electrical energy?

Which statement is incorrect for resistors connected in series?

The Current arrived from cell or battery is ?

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

The SI unit of resistance is ohm denoted by;

Power of washing machine is;

Which statement is correct for the resistance?

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

Which very sensitive instrument can detect small current in a circuit?

Watt is unit of electric power which is equal to

Most of the electric charge around us is bound in...

In house wiring all appliances are connected with each other;

Which is the source of current?

The potential difference across a circuit component can be measured by;

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

The current changes direction after equal intervals of time is;

Power of electric stove is;

After suitable modification galvanometer can be converted into;

SI unit of current is;

Electric potential and e.m.f

Example of insulator is;

The amount of energy delivered by a power of one kilowatt in one hour is called;

Which disconnect the supply automatically if current exceeds the normal value?

According to Ohm's law;

The time interval after which the a.c. voltage or current repeats its value is known as its;

As the charges move around the circuit the electrical potential energy;

In equation V = IR the constant of proportionality and resistance of conductors is;

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

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

Which device is connected in series with the live wire in the circuit to protect the equipments when excess, current flows?

Materials having resistance that changes with voltage or current are;

In Pakistan, alternating current oscillates every second

Conventional current flow from;

Dry human skin has a resistance of;

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

If V = 1 volt and I = 1 ampere then the value of R is;

Potential energy per unit charge is;

Which statement is correct about voltmeter?

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

Which provides a safe route for the current to flow through, if the live wire touches the metal casing.

The property of a substance which offers opposition to the flow of current through it is;

SI unit of potential difference is;

The wire is maintained at zero potential is;

Which wire have smaller resistance?

The unit of e.m.f. which is equal to volt in SI system is;

The conduction of current is only due to movement of free;

Which equation is correct for Ohm's law?

Ampere of current that passes through the bulb consumes energy;

An electric current in conductors is due to the flow of

Fan converts electrical energy into;

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

In metals the current is produced due to flow of;

In parallel combination of resistors which statement is incorrect?

In a dry cell which energy changes into electrical energy?

A pipe offers less resistance to water flow is it.