Engine: Electricity

1. A a voltage tester with a high input impedance and a voltage rating higher than any expected measured voltages
2. B a voltage tester with a low input impedance and a higher voltage rating than any expected measured voltages
3. C a voltage tester with a low input voltage and a lower voltage rating than any expected measured voltage
4. D a voltage tester with a high input impedance and a lower voltage rating than any expected measured voltages

Tip: press A-D to answer