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- 3. If you change the resistance of the resistor: a. How does the current through the circuit change? (answer, explain, evidence) b. How does the voltage of the battery change? (answer, explain, evidence)a. Bulb A remains the same because the voltage and current to it will be the same as before. b. Bulb A will glow brighter than before because adding another bulb in parallel will give greater current to bulb A, therefore greater brightness. c. Bulb A will glow lesser because adding another bulb in parallel will give lesser current to Bulb A, therefore lesser brightness. d. Either C or D e. Either B or C 2.In series circuit electrons in the current when comes to second bulb after passing through the first, have A. more energy B. No answer C. less power D. more power E. less energy2. If you change the value of the battery voltage: a. How does the current through the circuit change? (answer, explain, evidence) b. How does the resistance of the resistor change? (answer, explain, evidence)