How many watts of power are used in a circuit with a 1.5V battery drawiing 410 mA?

0.615 Watts of power are used by the circuit

Explanation:

the formula for Electric power is

P = V*I

where P = power used by the circuit [watts], V = tension of the battery [V=volts], I=circuit current [A=amperes].

therefore

P = V*I = 1.5 V * 410 mA * (1 A / 1000 mA) = 0.615 W

P = 0.615 Watts