Electricity and circuits Worksheet-1

Electricity and circuits Worksheet-1

Multiple-choice questions:

1. In an electric circuit, the direction of the current flow in an electric cell is from:

(A) Positive terminal to negative terminal of a cell

(B) Negative terminal to positive terminal of a cell

(C) Any direction

(D) None of these

2. If the filament of the bulb breaks, the bulb is then said to be:

(A) Short-circuited                           (B) Fused

(C) Over-loaded                               (D) None of these

3. A simple device that is either use to break the electric circuit or to complete it is known as:

(A) Tester             (B) Filament        (C) Switch            (D) Fuse

4. Electromagnets are used in:

(A) Separating magnetic material from junk 

(B) Electric bell

(C) Lifting heavy loads (crane)

(D) All of these

5. The best conductor of electricity is:

(A) Copper           (B) Aluminium    (C) Brass              (D) Silver

6. Combination of two or more cells are called:

(A) Switch            (B) Element         (C) Key                 (D) Battery

7. Effect that is responsible for glowing of bulb is:

(A) Magnetic effect of current       (B) Chemical effect of current

(C) Heating effect of current (D) None of these

8. The ‘ISI’ mark on the electrical appliances, stands for:

(A) Indian Standard institution

(B) Indian Statistical institution 

(C) International Standard institution

(D) International Statistical institution 

9. Which instrument is use to measure the electric current in a circuit?

(A) Ammeter                                    (B) Voltmeter

(C) Galvanometer                            (D) Resistor

10. Which instrument is use to measure the voltage across the wire?

(A) Ammeter                                    (B) Voltmeter

(C) Galvanometer                            (D) Resistor

Answer Key:

1. (A)
2. (B)
3. (C)
4. (D)
5. (D)
6. (D)
7. (C)
8. (A)
9. (A)
10. (B)