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A proton beam is going from north to south and an electron beam is going from south to north. Neglecting the earth’s magnetic field, the electron beam will be deflected (consider only magnetic forces)

$\begin {array} {1 1} (a)\;Towards\: the\: proton \: beam & \quad (b)\;Away\: from \: the\: proton\: beam \\ (c)\;Upwards & \quad (d)\;Downwards \end {array}$

Both the beams can be treated as two wires carrying currents in the same direction which causes them to be attracted by each other.
Ans : (a)