Answer:
Yes,in fact visible 'light' is a form of radiation, which can be defined as an energy that travels in the form of electromagnetic waves. It can also be described as a flow of particle-like 'wave-packets', called photons, that travel constantly at the speed of light (about 300 000 kilometres per second).
Explanation:
Answer:
0.5 A
Explanation:
N = 20, A = 50 cm^2 = 50 x 10^-4 m^2, dB = 6 - 2 = 4 T, dt = 2 s, R = 0.4 ohm
The induced emf is given by
e = - N dФ/dt
Where, dФ/dt is the rate of change of magnetic flux.
Ф = B A
dФ/dt = A dB/dt
so,
e = 20 x 50 x 10^-4 x 4 / 2 = 0.2 V
negative sign shows the direction of magnetic field.
induced current, i = induced emf / resistance = 0.2 / 0.4 = 0.5 A
A length of of electrified wire.
Answer:
When touching metal doorknobs, for example; electrons can jump and give you electric shocks. Static charges build up on clouds untl the cant hold any more charges, at that point, lightning can occur. The study of electricity is where charges are not moving, and this is called electrostatics
Explanation:
Answer:
it leads to increase in temperature of the earth and it harms living being
Explanation:
carbon dioxide is lite gas ,so it form a layer of carbon dioxide in the atmosphere.By our dairy activities such as driving ,burning etc release carbon dioxide which increase the layer of the carbon dioxide.the carbon dioxide layer absorb the heat energy from the sun so the temperature will increase and it will make global warming.the living organisms in the earth can not sustain the hot temperature hence it affect the living organisms in the earth
