Answer: Electrostatics is a branch of physics that studies electric charges at rest.
The uncertainty in a measured value is the possible variation in a measured value arising due to inaccuracies in the instrument being used. In the case described, the beats are 127 per minute, and the uncertainty is +/-4 beats. This means that the beats may actually be between 123 and 131.
The fractional uncertainty is: 4/127 = 0.031
And the percentage uncertainty is: 4/127 * 100 = 3.1%
Answer:
So here source of EMF in the given circuit is Solar Cell
Explanation:
EMF source is the energy source which provide constant potential difference across the conductor
So here we have
copper wire : this provide the path for the flow of electrons
light bulb : It provides the light energy in the circuit
Solar Cell : It provides the constant potential difference to the circuit
Switch : It is used to control the current flow in the circuit