Question

Question 18: (a) Why do electricians wear rubber hand gloves while working with electricity ? () What p.d. is needed to send a current of 6 A through an electrical appliance having a resistance of 40 Ω ? Lakhmir Singh Pbhysics Class 10

Answer 1

a. during an electricity work a large amount of current may pass from our body which may be fatal for avoiding direct contact from current electricians wear rubber hand gloves

b.V=IR
V=6x40=240Volt

Answer 2

Answer:

(a) Electricians wear rubber hand gloves while working with electricity because rubber is an insulator and it will prevent them from getting electric shock, in case of short circuit or overloading.

(b) We know that

V=IR

Here, I=6A

R=40 ohm

so,

V=6*40

V=240v

so, 240v is the potential difference needed to send a current of 6A through an electrical appliance that has a resistance of 40 ohm.

Thank you

Hope it helps you