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A single turn cirular coil is connected ...

A single turn cirular coil is connected to a cell as shown. Magnetic field at the centre O of the coil is

A

a. `(2pid)/(r)`

B

b. `2 pi l`

C

c. zero

D

d. `(1)/(2 pir)`

Text Solution

Verified by Experts

The correct Answer is:
`(1)/(pir)`
`2 pi l`
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