Question

This question is of physics​

Answer 1

Answer:

Quantam physics branch of physics concerned with quantam theory.

Explanation:

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Answer 2

Explanation:

In electrical engineering, ground or earth is the reference point in an electrical circuit from which voltages are measured, a common return path for electric current, or a direct physical connection to the earth. Electrical circuits may be connected to ground for several reasons.

Answer: The new resistance will be 4 ohm