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WorksheetsElectric Voltage
Total questions: 12
Worksheet time: 6mins
電壓的英文是
VOLT
VOLTAGE
CURRENT
I
電壓的單位是
伏特
volt
A
Ampere
電壓的公式是
V = Q / E
V = QE
V = E / Q
V = Q/t
電壓公式 V = E / Q 的符號分別是
V 是電壓, E 是能量, Q 是電荷
V 是能量, E 是電壓, Q 是電荷
V 是能量, E 是電荷, Q 是電壓
V 是電壓, E 是電荷, Q 是能量
If 907 C of charge passes through a bulb and 2270 J of energy is extracted from the circuit in an hour, what is the potential difference across the bulb?
這問題中 Charge, Energy 分別是
Charge = 907 C, Energy = 2270 J
Charge = 2270 J, Energy = 907 C
If 907 C of charge passes through a bulb and 2270 J of energy is extracted from the circuit in an hour, what is the potential difference across the bulb?
potential difference, pd = 907 C / 2270 J
potential difference, pd = 2270 J / 907 C
If 907 C of charge passes through a bulb and 2270 J of energy is extracted from the circuit in an hour, what is the potential difference across the bulb?
2.5 V
0.4 V
907 C
2270 J
If 30 J of energy is supplied to the circuit per minute, how many coulombs of charge flow through the 3 V battery in the circuit in 5 minutes?
Q = E / V = 30 / 3 = 10 C
Q = E / V = (30x5) / 3 = 50 C
Q = V / E = 3/ 10 = 0.3 C
Q = V / E = 3/ (5 x10) = 0.06 C
A typical lightning flash lasts for 0.1 s and transfers 109 J of
energy. If the typical potential difference between the thundercloud and the ground is 108 V, what is the size of the current in a typical lightning flash?
I = Q / t = (E / V) / t = (109 / 108) / 0.1 = 100 A
I = Q / t = (E / V) / t = (108 / 109) / 0.1 = 1 A
The ( ) of a source is the energy imparted by the source per unit charge passing through it.
electromotive force (emf)
potential difference (p.d.)
current (I)
charge (Q)
____________________ is the electric potential energy converted to other forms per unit charge passing from one point to another outside the source.
Potential Difference (p.d.)
Electromotive Force (emf)
Current (I)
Charge (Q)
225 mA is
225 A / 1000
0.225 A
225 毫安培
225 安培
