Exercises

Author:Jharkhand Board

Jharkhand Board Science Solutions for Exercises

Simple step-by-step solutions to Exercises questions of Electric Current and Its Effects from SCIENCE : CLASS VII. Also get 3D topic explainers, cheat sheets, and unlimited doubts solving on EMBIBE.

Questions from Exercises with Hints & Solutions

EASY
7th Jharkhand Board
IMPORTANT

The combination of two or more cells is called a _____.

EASY
7th Jharkhand Board
IMPORTANT

When a current is switched ‘on’ in a room heater, it _____.
(Choose one of the following: produces heat/ produces wind).

EASY
7th Jharkhand Board
IMPORTANT

The safety device based on the heating effect of electric current is called a _____.

EASY
7th Jharkhand Board
IMPORTANT

To make a battery of two cells, the negative terminal of one cell is connected to the negative terminal of the other cell.

EASY
7th Jharkhand Board
IMPORTANT

When the electric current through the fuse exceeds a certain limit, the fuse wire melts and breaks. 

EASY
7th Jharkhand Board
IMPORTANT

An electromagnet does not attract a piece of iron.

EASY
7th Jharkhand Board
IMPORTANT

An electric bell has an electromagnet.

EASY
7th Jharkhand Board
IMPORTANT

In the circuit shown below,
Question Image

What will be the order in which the bulbs A, B and C will glow when the switch is moved to the ‘ON’ position?