A filament lamp and a 220 resistor are connected in series to a battery of e.m.f.

A filament lamp and a 220 Ω resistor are connected in series to a battery of e.m.f. 6.0 V. The battery has negligible internal resistance. A high-resistance voltmeter placed across the resistor measures 1.8 V.
Calculate:
a. The current drawn from the battery
b. The p.d. across the lamp
c. The total resistance of the circuit
d. The number of electrons passing through the battery in a time of 1.0 minute.
(The elementary charge is 1.6 × 10⁻¹⁹ C.)