# Current Electricity MCQ with solution

Current electricity multiple choice questions with answers: In this blog post (Electricity MCQ), we have written Physics MCQs on Current Electricity.

## Current electricity multiple choice questions with answers

1.  The binding force between electrons and the nucleus in an atom is known as

The Columb force

The Van-der-Walls force

The gravitational force

The restoring force

2. The direction of electric current in an electrical field is the direction of movement of

Positive Charge

Negative Charge

Nucleus

Valence electrons

3. The electric current through a conductor is the rate of transfer of charge across a  surface  placed

along the direction of flow

normal to the direction of flow

opposite to the direction of flow

at an angle of 45o to the direction of flow

4. Ampere is the unit of

Electric Potential

Electric Charge

Electric Current

Electric Field

5. Ohm’s Law is a relation between

Relation between current in a conductor and potential difference

Relation between electric charge in a conductor and Electric field

Relation between electric charge in a conductor and potential difference

Relation between electric current  in a conductor and Electric charge

6. Electric current in conducting wires of the same diameter

increases with length

decreases with length

is independent of its length

difficult to predict

7. Electric current in conducting wires of the same length

increases with cross-sectional area

decreases with cross-sectional area

is independent of its cross-sectional area

difficult to predict

8. Specific resistance or resistivity of a conducting wire

increases with its length

decreases with cross-sectional area

is only a characteristic of the material of the wire

is the same as its resistance

9. Unit of resistivity is

ohm

ohm-metre

mho-metre

ohm-1-metre-1

10. 1Color code for a carbon resistor of value 1Ω is

red, brown, black

black, brown, black

black, brown, brown

brown, brown, black

11. Silver ring after colored rings represent tolerance in value of resistance of

2 %

5 %

10 %

20 %

12. Golden ring after colored rings represent tolerance in value of resistance of

2 %

5 %

10 %

20 %

13. For metals, resistivity

increases with temperature

decreases with temperature

does not change with temperature

changes exponentially with temperature

14. Kirchhoff’s first rule deals with the following at a junction in an electrical circuit

branching of electric charge

branching of electric current

branching of electric field

none of the above

15. Kirchhoff’s second rule states that the algebraic sum of all the potential differences along a closed loop in a circuit is

Zero

Infinite

Equal to the square of potential difference

Sum of the product of currents and voltages

16. Wheatstone bridge is balanced

when no current flows through the galvanometer

when maximum current flow through the galvanometer

is independent of current flowing through the galvanometer

none of the above

17. Wheatstone bridge is most sensitive when

when all four resistances are of high value

when all four resistances are of low value

when all four resistances are equal

none of the above