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A point charge of 5 µC is located at point A between two horizontally parallel plates, which are 40 cm apart. The potential of the upper plate is 1000 V and the lower plate is at zero. The point charge then moves 30cm downwards from point A to point B. Given that the force when the point charge is at A is 0.0125N:
a) calculate the force on the charge when it is moved to position B
b) Calculate the energy that is expended in moving the charge from point A to point B
Three 1,5 volt battery cells are connected in series and and ammeter and glove are added what is the total current
9, IF the engine of a car of mass m is capable of delivering power P, the minimum time needed for the car to accelerate from rest to a speed v is?
Consider two capacitors, one having a capacitance twice the other, in two separate electric circuits. The same potential difference is applied to it. The charge that can be accumulated on the armatures of the two Capacitors:
A. Depends on the resistance of the circuit
B. Is the same because it is independent of the capacitor
C. Is equal to half at the level of the capacitor of double capacitance
D. Is double at the level of the capacitor with double capacitance
A battery is connected in series with a variable resistor R and an ammeter in order to form a circuit. The resistor of the ammeter may be neglected. When R is given the value 1.1ohm the current in the circuit is 4.0amp but when the R is given value 1.6ohm the current in the circuit is 3.0amp. Find the internal resistance of the battery
A battery is connected in series with a variable resistor R and an ammeter in order to form a circuit. The resistor of the ammeter may be neglected. When R is given the value 1.1ohm the current in the circuit is 4.0amp but when the R is given value 1.6ohm the current in the circuit is 3.0amp. Find the internal resistance of the battery
Given that VS = 3V, VBE = 0.3V, IC = 9mA, and R1 = 1kΩ, calculate the base current of the transistor Q1 using KVL. Also find the current gain (beta ) of the transistor Q1.
Given that VS = 3V, VBE = 0.3V, IC = 9mA, and R1 = 1kΩ, calculate the base current of the transistor Q1 using KVL. Also find the current gain ( ) of the transistor Q1
1m^3 of copper has a massive of 8.9x10^3
54kg of copper contains 6.0x10^26
In copper, there is roughly one electron liberated from each copper atom.
a) Show that the electron number density "n" for copper is about 10^29m^-3
#339914 on Dec 2023