MCQ
......... Charge is produced by friction
- AStationary.
- BNo.
- CAttractive.
- DAll.
Explanation:
The stationary charge (i.e static electricity) is produced by friction.
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A wire of length L metre carrying a current of I ampere is bent in the form of a circle. Its magnitude of magnetic moment will be
|
(a) |
(b) |
(c) |
(d) |
$10\text{cm}$
$10\sqrt{2}\text{cm}$
$\frac{10}{\sqrt{2}}\text{cm}$
The current between B and D in the given figure is
|
(a) 1 amp |
(b) 2 amp |
(c) Zero |
(d) 0.5 amp |
Biaxial crystal among the following is
|
(a) Calcite |
(b) Quartz |
(c) Selenite |
(d) Tourmaline |