Question

In the Fig. shown below each battery has emf = 5 V. Then the magnetic field at P is –

• A. Zero
• B.
• C. $\frac { 20 \mu _ { 0 } } { \left( \mathrm { R } _ { 1 } + \mathrm { R } _ { 2 } \right) ( .8 \pi ) }$
• D. None of these

Answer 1

Answer: (A)

Zero

Answer 2

Because current in the loop is zero.