When a 100-ω resistor is connected across the terminals of a battery of emf ε and internal resistance r, the battery delivers 0.794 w of power to the 100-ω resistor. when the 100-ω resistor is replaced by a 200-ω resistor, the battery delivers 0.401 w of power to the 200-ω resistor. what are the emf and internal resistance of the battery? (a) ε = 10.0 v, r = 5.02 ω(b) ε = 12.0 v, r = 6.00 ω(c) ε = 4.50 v, r = 4.00 ω(d) ε = 9.00 v, r = 2.04 ω(e) ε = 9.00 v, r = 1.01 ω

(E) ε = 9.00 V, r = 1.01 Ω

Explanation:

As we know that power across the resistance is given as

now we will have

now we have

now we can use it as

similarly now 100 ohm resistance is replaced by another resistance of 200 ohm

so we will have

now we have

now we can use it as

now we have

now to find voltage of cell we will have

whitney would be experiencing fear or unintentional terror

molecules are free to separate from each other and will take on the shape of the container. molecules move completely at random and high speeds. they vibrate in a fixed position and do not move around much. molecules expand to the edge of their container.