In current electricity, a positive charge refers to,

(a)

presence of electron

(b)

presence of proton

(c)

absence of electron

(d)

absence of proton

Electric field lines________ from positive charge and__________ in negative charge.

(a)

start; start

(b)

end; start

(c)

start; end

(d)

end; end

In an electrolyte the current is due to the flow of

(a)

electrons

(b)

positive ions

(c)

both (a) and (b)

(d)

neither (a) nor (b)

The following is not a safety device.

(a)

Fuse

(b)

Trip switch

(c)

Ground connection

(d)

Wire

Resistance of a wire depends on

(a)

temperature

(b)

geometry

(c)

nature of material

(d)

all the above