NCERT Solutions for Chapter: Electricity, Exercise 1: Exercise

Why is nichrome wire used in many electrical heating devices?

What does the symbol mean in an electric circuit?

A current of $1 \mathrm{A}$ flows through an electric bulb for $5 \mathrm{minutes}$.

What is the amount of electric charge that flows through the bulb? Show your calculation.

Which of these decides the resistance of a wire?

The picture shows an electric circuit.

Which of these is true about the circuit?

Will there be any change in the ammeter reading if the length of the wire in the circuit is doubled? Explain your answer.

Three bulbs are connected in a circuit in an identical way. When a fourth bulb is also connected to the same circuit in the same way, brightness is reduced then the bulbs are connected in _____.

Choose the correct statement:

When the same current $\left(i\right)$ flows through two circuits as shown in the figures, then (assume that all bulbs are identical)

(i) 

(ii) 

(A) Bulbs in the first combination glow with more brightness.

(B) Bulbs in the second combination glow with more brightness.