Effects Of Electric Current

Question 1

Current can be calculated using formula

Answer 1

Current = charge/time

Question 2

When currents flows thru metallic wires wire offers some resistance to flow of ___________ .

Answer 2

Electrons

Question 3

Current flowing thru metallic wires is offers some resistance to flow of electrons. Electrical energy converts to heat energy in this process. It was first observed by ___________ and was called the __________.

Answer 3

James Prescott Joule
Joule’s law of heating effect

Question 4

_________________ materials offer high resistance to flow of electrons.

Answer 4

Tungsten, aluminium

Question 5

Some appliances have wound coils of wire known as _________ thru which current flows resulting in heating due to resistance offered by wire

Answer 5

Heating element

Question 6

Factors on which heating effect of current depend on

Answer 6

Cross-sectional area
Time
Current

Question 7

Cross- sectional area factor

Answer 7

Thinner wire greater the heating effect and vice-versa