for the circuit of figure, find the following quantities.
i can't show you the figure because i can't copy it from a PDF. i will just type it to show you the figure for you guys.
A single cell battery (which is 130 v) is connected to:
R1: 3k ohm
R2: 4k ohm
R3: 1k ohm, P=100 mW
R4: R (R is unknown)
find the following quantities:
a. The circuit current.
b. The total resistance of the circuit.
c. The value of the unknown resistance, R.
d. The voltage drop across all resistors in the circuit.
e. The power dissipated by all resistors.
it depends on how the resistors are connected.
are the Resistors in parallel? series? some combination?
it is in a combination
To solve the given questions, we can use Ohm's Law and some basic principles of circuit analysis. Let's break it down step by step:
a. The circuit current:
The circuit current can be found using Ohm's Law, which states that current (I) is equal to the voltage (V) divided by the resistance (R). In this case, since the battery has a voltage of 130V, we need to find the equivalent resistance of the circuit first.
b. The total resistance of the circuit:
The total resistance of the circuit can be found by adding the individual resistances in series. In this case, the resistors R1, R2, R3, and R4 are connected in series. Therefore, the total resistance (RTotal) is the sum of these resistances:
RTotal = R1 + R2 + R3 + R4
c. The value of the unknown resistance, R:
Unfortunately, the given information does not specify the value of R. So, without additional information or measurements, we cannot determine its value.
d. The voltage drop across all resistors in the circuit:
In a series circuit, the total voltage (VTotal) of the circuit is divided across the individual resistors based on their respective resistances. The voltage drop (V) across a resistor can be calculated using Ohm's Law: V = I * R.
Since we found the circuit current (from part a) and the resistances (from part b), we can calculate the voltage drop across each resistor using the formula mentioned above.
e. The power dissipated by all resistors:
To find the power dissipated by each resistor, we use the formula: P = (V^2) / R. Since we calculated the voltage drop across each resistor (from part d) and we know the resistance value for each resistor, we can calculate the power dissipated by each resistor using this formula.
Note: Please provide more information or specify the desired output if you would like a more accurate calculation for any specific part of the question.