Question

When a proton is released from rest in a room, it starts with an initial acceleration $a_0$ towards west. When it is projected towards north with a speed $v_0$ it moves with an initial acceleration 3$a_0$ toward west. The electric and magnetic fields in the room

• A. $\frac{ma_0}{e}$ west $\frac{2ma_0}{ev_0}$ up
• B. $\frac{ma_0}{e}$ west $\frac{2ma_0}{ev_0}$ down
• C. $\frac{ma_0}{e}$ east $\frac{2ma_0}{ev_0}$ up
• D. $\frac{ma_0}{e}$ east $\frac{2ma_0}{ev_0}$ down

Answer 1

Answer: (B)

$\frac{ma_0}{e}$ west $\frac{2ma_0}{ev_0}$ down

Answer 2

The correct option is (B): $\frac{ma_0}{e}$ west $\frac{2ma_0}{ev_0}$ down