A circuit is supplied with 60 VDC and contains two series resistors with values of 100 and 400 . What is the total current in th
e circuit? A. 2 A
B. 0.82 A
C. 1.2 A
D. 0.12 A
What circuit quantity is measured by connecting a meter's test leads in series with an energized component?
A. Resistance
B. Power
C. Voltage
D. Current
When resistors are connected in series, they act like a single resistor whose resistance is their sum.
100 ohms and 400 ohms, connected in series, look like a single resistor of 500 ohms.
Current = (voltage) / (resistance)
= (60 volts) / (500 ohms) = 0.12 A. ________________________ <span> Current is measured by connecting a meter in series with an energized component. In other words, a break is made in the circuit, the meter is connected in the break, and the current to be measured literally flows through the meter.</span>
The stress on the material is defined by force per unit of cross-sectional area. So it depends on the force and the diameter of the wire, which is the same for both wires. The material that defines the breaking point, is also the same. Therefore, both wires have their breaking point the same at 5000N. The wire length plays no role in here.
