Veera Bala Rastogi and Shalini Mahajan Solutions for Chapter: Electric Current and its Effects, Exercise 5: PRACTICE TIME

Author:Veera Bala Rastogi & Shalini Mahajan

Veera Bala Rastogi Science Solutions for Exercise - Veera Bala Rastogi and Shalini Mahajan Solutions for Chapter: Electric Current and its Effects, Exercise 5: PRACTICE TIME

Attempt the practice questions on Chapter 15: Electric Current and its Effects, Exercise 5: PRACTICE TIME with hints and solutions to strengthen your understanding. Science Booster solutions are prepared by Experienced Embibe Experts.

Questions from Veera Bala Rastogi and Shalini Mahajan Solutions for Chapter: Electric Current and its Effects, Exercise 5: PRACTICE TIME with Hints & Solutions

EASY
7th CBSE
IMPORTANT

Name a device which uses the heating effect of electric current to give light.

EASY
7th CBSE
IMPORTANT

What is a combination of two or three electric cells together called?

(Choose from the following: Electric switch/Battery)

EASY
7th CBSE
IMPORTANT

Name the switch used in an electric circuit to protect from damage caused by overload or short-circuit.

(Choose from: MCB/ LCB/ TCB)

EASY
7th CBSE
IMPORTANT

Name the instrument used to measure flow of electric current.

EASY
7th CBSE
IMPORTANT

What is used to separate iron scrap from the junk in industries?
(Choose one of the following: Electromagnet/ Natural magnet).

EASY
7th CBSE
IMPORTANT

Why are fluorescent tubes and CFLs better alternatives to an electric bulb?

MEDIUM
7th CBSE
IMPORTANT

Why is fuse wire made of tin or alloy of tin and copper?

MEDIUM
7th CBSE
IMPORTANT

List the appliances used in which you are using the heating effect of electric current. Can you think of the appliances in which heat produced due to flow of current is a waste?