Q

A motor develops a power of 85 W for 30 s. What is the work done by the motor?

RRB Group D 05 Aug, 2026 (9:00 AM - 10:30 AM) 2026
✓ Answer: D 2550 J
The correct choice is 2550 J. It follows from the relevant Newtonian mechanics, motion, work, energy, power or simple-machine relationship.
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