Three resistors with values 0.90? , 2.9? , and 4.2? are connected in parallel in

Question

Three resistors with values 0.90? , 2.9? , and 4.2? are connected in parallel in a circuit with a 6.4V battery.
1)What is the total equivalent resistance? 2)What is the voltage across each resistor? What is the power delivered to the 4.2? resistor?
(Express your answers using two significant figures.) Three resistors with values 0.90? , 2.9? , and 4.2? are connected in parallel in a circuit with a 6.4V battery.
1)What is the total equivalent resistance? 2)What is the voltage across each resistor? What is the power delivered to the 4.2? resistor?
(Express your answers using two significant figures.)

Explanation / Answer

R eq = 0.9 || 2.9 || 4.2

= ( 0.9 * 2.9) / ( 2.9 + 0.9) || 4.2

= 0.59 Ohms

Voltage across each resistor is same = 6.4 V

Power delivered to 4.2 Ohms resistor = V^2/R = 6.4^2 / 4.2

= 9.752 Watts

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