class 10th worksheet physics

Electricity
Language: English
Subject: Other > Other
Age: 14 - 16

class 10th worksheet physics

Electricity

Q-1 The least resistance obtained by using 2ohm,4ohm,1ohm and 100ohm is.

(a)< 100ohm

(b)<4ohm
(c)<1ohm

(d)>2ohm

Q-2 A fuse wire repeatedly gets burnt when used with a good heater .It is advised to use a fuse wire

(a) More length

(b)Less wire

(c)Less length

Q-3 Electrical resistivity of a given metallic wire depends upon.

(a) its length

(b)its thickness

(c)its shape

(d)Nature of the material

Q-4 unit of electric power is

(a)volt ampere

(b)kilowatt hour

(c)watt second

(d)joule second

Q-5 How much heat is produced if the current is doubled?

(a)twice the original length

(b)thrice the original amount

(c)four times the original amount

(d)five times the original amount

Q-6 two bulb are rated 40w,220w and 60w,220w .The ratio of their resistance will be.

(a)4:3

(b)3:4

(c)2:3

(d)3:2

Q-7 What is the S.I unit of resistivity

Q-8 Give S.I unit of current.

Q-9 Electrical resistivity of a given metallic wire depends upon.

Q-10 The unit of e.m.f of a cell is

(a)dyne

(b)volt

(c)ampere

(d)joule