Answer:
10 V
Explanation:
From Ohm's law, V=IR where V is the potential difference voltage, I is the current and R is resistance. Substituting 2A for current and 5 Ohms for resistance then V=2*5= 10 V
Answer:
B) Angular velocity
Explanation:
The equivalent of Newton's second law for rotational motions is
where
is the net torque on a system
I is the moment of inertia
is the angular acceleration
From the formula, we observe that if a constant net torque (=different from zero) is applied to an object, than the angular acceleration of the object is non-zero and constant.
But angular acceleration is defined as the rate of change of the angular velocity, :
so, a non-zero angular acceleration means that the angular velocity is changing, so the correct answer is B.
Answer:
impedance Z = 416.66 ohm
voltage across inducance V = 346.99 V
power factor = 0.720
Explanation:
given data
resistor R = 300
voltage amplitude = 500 V
resistor = 216 W
to find out
impedance and amplitude of the voltage and power factor
solution
we apply here average power formula that is
average power = I²×R ............1
I =
so
average power = ()²×R
Vrms = × Vmax
Z = V ×
Z = 500 ×
impedance Z = 416.66 ohm
and
we know voltage across inductor is here express as
V = I × X .............2
so here X will be by inductance
Z² = R² + (X)²
(X)² = 416.66² - 300²
X = 289.15 ohm
and I =
I =
I = 1.20 A
so from equation 2
V = 1.20 × 289.15
voltage across inducance V = 346.99 V
and
average power = Vmax × Imax × cos∅
tan∅ =
tan∅ = 43.95°
so power factor is
power factor = cos43.95°
power factor = 0.720
Answer:
Near the black hole, The gravitational pull is so strong and the black hole has a lot of stress energy. This causes the clock to tick slower than usual and due to this , Time slows down to a great extent.