A half ring of radius $R$ has a charge of $\lambda$ per unit length. The electric force on $1\, C$ charged placed at the centre is
A half ring of radius $R$ has a charge of $\lambda$ per unit length. The electric force on $1\, C$ charged placed at the centre is
- [AIIMS 2018]
- A
Zero
- B
$\frac{k \lambda}{R}$
- C
$\frac{2 k \lambda}{R}$
- D
$\frac{k \pi \lambda}{R}$
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