A train leaves Kazipet at 5 a.m. and reaches Bangalore at 3 p.m. Another train leaves Bangalore at 7 a.m. and reaches Kazipet at 5 p.m. When do the two trains meet? Assume that the trains travels at equal uniform speeds.
A current I flows through a resistor. A source maintains a potential difference of V across the resistor. The energy supplied by the source in time t is