6 Questions
What is the magnitude of elementary charge?
1.6 x 10^-19 C
If the resistance of a wire is R and the length of the wire is doubled, what will be its new resistance?
R
What is the unit of Tesla?
magnetic flux
What is the frequency of household supply of AC in India?
50 Hz
The speed of electromagnetic waves is independent of which of the following?
wavelength
What happens to the resistance of a wire if the length is halved?
R/2
Study Notes
Electricity and Magnetism
- The magnitude of elementary charge is a fundamental constant of nature, denoting the charge of a proton or electron.
- If the length of a wire is doubled, its resistance will also double, given that the resistance of the original wire is R.
- The unit of Tesla is weber per square meter (Wb/m²), used to measure magnetic flux density.
- The frequency of household supply of AC in India is 50 Hz.
- The speed of electromagnetic waves is independent of the motion of the observer or the source of light.
- If the length of a wire is halved, its resistance will be reduced to half of its original value.
This quiz provides a detailed overview and instructions for a Physics question paper for 12th class students. It includes information on the total number of sections, types of questions, marks allotted, and word limits for answers.
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