Questions: (a) Select the formula that relates the current I to the emf E and resistance R in a simple circuit. ☐ I = E + R ☐ I = E - R ☐ I = E × R ☐ I = E ÷ R ☐ I = R ÷ E (b) Describe what happens to the current as the resistance increases (all other factors remaining constant). ☐ Current increases ☐ Current decreases ☐ Current remains the same ☐ Current becomes zero ☐ Current becomes infinite (c) What is the SI unit for electrical resistance? ☐ Ohm (Ω) ☐ Ampere (A) ☐ Volt (V) ☐ Watt (W) ☐ Joule (J)

Transcript text: (a) Select the formula that relates the current I to the emf E and resistance R in a simple circuit. ☐ I = E + R ☐ I = E - R ☐ I = E × R ☐ I = E ÷ R ☐ I = R ÷ E (b) Describe what happens to the current as the resistance increases (all other factors remaining constant). ☐ Current increases ☐ Current decreases ☐ Current remains the same ☐ Current becomes zero ☐ Current becomes infinite (c) What is the SI unit for electrical resistance? ☐ Ohm (Ω) ☐ Ampere (A) ☐ Volt (V) ☐ Watt (W) ☐ Joule (J)