Question

Date : 11/01/2021 Chapter-3 Electric current & its effect Class test

Question 1.

In making a battery

(a) positive terminal of one cell is connected to the negative terminal of the next cell

(b) positive terminal of one cell is connected to the positive terminal of the next cell

(c) negative terminal of one cell is connected to the negative terminal of the next cell

(d) none of the above

Question 2.

Where can the key or switch be placed in the circuit?

(a) Left side of the battery

(b) Right side of the battery

(c) Can be placed anywhere in the circuit

(d) Near the positive terminal of the bulb

Question 3.

Which one of the following is based on the heating effect of current?

(a) Geyser

(b) Hair dryer

(c) Immersion rod

(d) All of these

Question 4.

The coil of wire contained in an electric heater is known as

(a) component

(b) element

(c) circuit

(d) spring

Question 5.

The amount of heat produced in a wire depends on

(a) material

(b) length

(c) thickness

(d) all of these

Question 6.

Choose the statement which is not correct in the case of an electric fuse.

(a) Fuses are inserted in electric circuits of all buildings.

(b) There is a maximum limit on the current which can safely flow through the electric

circuits.

(c) There is a minimum limit on the current which can safely flow in the electric

circuits.

(d) If a proper fuse is inserted in a circuit it will blow off if current exceeds the safe

limit.​

Answer 1

Answer:

Q1)  

(a) positive terminal of one cell is connected to the negative terminal of the next cell

Q2)  (d) Near the positive terminal of the bulb

Q3)  (d) All of these

Q4) (d) spring

Q5)  (d) all of these

Q6) (c) There is a minimum limit on the current which can safely flow in the electric

Explanation: