0 4
The circuit diagram shows a 50 W heater connected to a four-cell
battery (Figure 2)
Figure 2
A
heater
V
0
4
1
Calculate the potential difference of the battery. Each cell is 3.5V.
.

Two resistors r1 and r2 may be connected either in series or parallel across an ideal battery with emf ε. we desire the rate of energy dissipation of the parallel combination to be 8.75 times that of the series combination. if r1 = 105 ω, what are the (a) smaller and (b) larger of the two values of r2 that result in that dissipation rate?

Which body part transports oxygen removes waste materials in carries nutrients to the body as part of the circulatory system

Give one example to show that when substances are mixed,it may result in a chemical or a physical change depending on the conditions.