Which of the following is not true about electric charge?
Which of the following is not true about electric charge?
- A
Charge is a scalar quantity
- B
Charge on an isolated system is always conserved
- C
A particle having nonzero rest mass can have zero charge
- D
A particle having zero rest mass can have non zero charge
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A girl brings a positively charged rod near a thin neutral stream of water from a tap. She observes that the water stream bends towards her. Instead, if she were to bring a negatively charged rod near to the stream, it will
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- [KVPY 2012]
How can you charge a metal sphere positively without touching it?
How can you charge a metal sphere positively without touching it?
Five balls numbered $1$ to $5$ are suspended using separate threads. Pairs $(1, 2)$, $(2, 4)$ and $(4, 1)$ show electrostatic attraction, while pair $(2, 3)$ and $(4, 5)$ show repulsion. Therefore ball $1$ must be
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- [AIIMS 1998]
What is called earthing ? Give importance of earthing in wiring.
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