Ohm's law - practice problems - page 5 of 6
Number of problems found: 107
- Resistor resistance calculation
A current of 20mA passes through the resistor, which is connected to a voltage of 2.5V. What is the resistance of the resistor? - LED circuit calculation
The LED parameters are: ULed is 3V, Current 100mA Take measures so that the LED at the U 12V supply is not destroyed. Perform the calculation and also the wiring diagram. - Resistor current calculation
At a voltage of 16 V between the ends of the resistor, a current of 200 mA flows through the resistor. What current will flow through the resistor when connected to 48 V? - Appliance current calculation
The measurement showed that a current of 160 mA flows through the appliance at a voltage of 4 V. What current flows through this appliance when connected to a voltage of 12 V? - Electric charge time
How long does it take for a 15C charge to pass through the driver's average if a 3mA current passes through the driver? - Light bulb resistance
The resistance of a 40W light bulb is 10 Ohms. What voltage source is connected to it? What current is flowing through it? - Two resistors
Two resistors when they give 25 ohms in series and 4 ohms in parallel, what are the values of - Transformer
Solve the textbook problems - transformer: a) N1 = 40, N2 = 80, U2 = 80 V, U1 =? b) N1 = 400, U1 = 200 V, U2 = 50 V, N2 =? - Electric input power
Solve problems related to electric power: a) U = 120 V, I = 0.5 A, P =? b) P = 200 W, U = 230 V, I =? c) I = 5 A, P = 2200W, U =? - Resistors Series Parallel
Two resistors of 20 Ω and 30 Ω are connected in the electrical circuit. a, Calculate the total resistance in the electrical circuit if the resistors are connected in series. b, Calculate the total resistance in the electrical circuit if the resistors are - The bulbs
The bulbs are connected serially to two bulbs and one resistor. Each bulb has a resistivity of 100 ohms, and the resistor has a resistivity of 60 ohms. The voltage source in the circuit is 24 volts. Do you know what voltage to measure on individual applia - R1+R2 in parallel The resistance ratio of the first and second resistors is 3:1, and the current flowing through the first resistor is 300 mA. What current flows through the second resistor (resistors connected in parallel)?
- Voltage Ratio in Series If the resistance of the first resistor is 200 ohms and the resistance of the second resistor is 600 ohms. What will be the ratio of the electrical voltage across the first resistor to the electrical voltage across the second resistor (both are connected
- Resistors Series Voltage Ratio If the resistance of the first resistor is 100 ohms and the voltage ratio on the first and second resistors is 2:1. What will be the resistance of the second resistor connected in series?
- Resistance - ohms If the resistance of the first resistor is 300 ohms and the resistance of the second resistor is 100 ohms. What is the resulting resistance?
- Resistor Current Ratio Parallel
If the resistance ratio of the first and second resistors is 3:1 and the current flowing through the first resistor is 300 mA. What will be the current through the second resistor? - Serial connection If the voltage on the first resistor is 6 V and the resistance ratio of the first and second resistors is 1:3, what will be the voltage across the second resistor if they are connected in series?
- Resistor Ratio in Parallel If the current flowing through the first resistor is 200 mA and the second is 0.4 A, what will be the ratio of the first and second resistors connected in parallel?
- The appliance
The appliance has a power input of 2.3 kW. It is connected to the mains voltage of 230 V. What is the current flowing through the appliance? - Filament of bulb
The bulb's filament has a 1-ohm resistivity and is connected to a voltage of 220 V. How much electric charge will pass through the fiber when the electric current passes for 10 seconds?
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