Teaching BPSC 4.0 बिहार उच्च माध्यमिक शिक्षक भर्ती (PGT) Mock Test Physics Moving Charges and Magnetism Motion in Combined Electric and Magnetic Fields
If a beam of electrons travels undeviated in a mutually perpendicular uniform magnetic and electric fields of intensity 2 × 10-3 T and 1.0 × 104 V/m respectively, the velocity of electron will be:
1
2 × 1010 m/s
2
3 × 104 m/s
3
5 × 106 m/s
4
More than one of the above
5
None of the above