Subject Experts Solutions for Chapter: Electric Current and Its Effects, Exercise 2: Exercise 14.2

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Subject Experts Science Solutions for Exercise - Subject Experts Solutions for Chapter: Electric Current and Its Effects, Exercise 2: Exercise 14.2

Attempt the practice questions on Chapter 14: Electric Current and Its Effects, Exercise 2: Exercise 14.2 with hints and solutions to strengthen your understanding. Exam Guru Science solutions are prepared by Experienced Embibe Experts.

Questions from Subject Experts Solutions for Chapter: Electric Current and Its Effects, Exercise 2: Exercise 14.2 with Hints & Solutions

EASY
7th CBSE
IMPORTANT

Name any four electrical appliances in which the heating effect of electric current is utilised.

MEDIUM
7th CBSE
IMPORTANT

Why does the bulb in the circuit given below in figure does not glow? Draw the circuit with required change.
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MEDIUM
7th CBSE
IMPORTANT

What is a solenoid? Draw a diagram with a solenoid connected in a circuit. How can you increase the strength of a solenoid?

MEDIUM
7th CBSE
IMPORTANT

What is an electromagnet? Give four uses of an electromagnet.

HARD
7th CBSE
IMPORTANT

Draw a well labelled diagram of an electric bell and explain its working.

HARD
7th CBSE
IMPORTANT

With the help of an activity, show the magnetic effect of current.

MEDIUM
7th CBSE
IMPORTANT

Paheli took a wire of length 10 cm. Boojho took a wire of 5 cm of the same material and thickness. Both of them connected the wires as shown in the circuit given in figure. The current flowing in both the circuits is the same. Will the heat produced in both the cases be equal? Explain.

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MEDIUM
7th CBSE
IMPORTANT

Paheli took a wire of length 10 cm. Boojho took a wire of  5 cm of the same material and thickness. Both of them connected the wires as shown in the circuit given in the figure. The current flowing in both circuits is the same. Will, the heat produced be the same if the wires taken by them are of equal lengths but of different thickness? Explain.

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