In the series circuit, if the current through r1 is 1.5 a, what is the current through r2?
Answers
In a series circuit, the current in all points of the circuit is the same. Hence, current through the resistor r2 is same as that of r1 that is 1.5 amperes.
What is series circuit ?
A circuit is the path through which current is passing which can be of open circuit or closed circuit. There are two ways in which the components are connected in the circuit namely, series and parallel.
In a series circuit, the electrical components are connected in a series fashion. Here, the current is the same in all points of the series circuit. But voltage will be different.
In the case of parallel circuits, the components are connected in a parallel fashion. The current passing through each parallelly connected device will be different.
Here, the two resistors are connected in series. Hence, the current passing through is the same that is 1.5 A for r2 also.
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Hope this helps!
a. m/s
b. m/s2
c. m2/s
d. kg-m/s2
Answers
That's a speed.
b). m/s² ... (meters per second) per second.
Acceleration.
c). m²/s ... square meters per second.
Rate of change of area.
Meaningless unit, unless you happen to be
a painter of houses or a mower of lawns.
d). kg-m/s² ... (mass) x (an acceleration).
This is a unit of force.
In fact, it's the definition of "newton".
Answers
Answer:
Between 23,000 to 54,000 Hz
Final answer:
A dog whistle typically emits sound at frequencies above 20,000 Hz but below 60,000 Hz, which is a range humans cannot hear but dogs can.
Explanation:
The frequency of sound emitted by a dog whistle is typically above the range of human hearing, which upper limit is around 20,000 Hz. However, since dogs can hear up to about 60,000 Hz, you would expect a dog whistle to emit sound at frequencies above 20,000 Hz but below 60,000 Hz. So, a frequency anywhere within the range 20,000 Hz and 60,000Hz would be suitable for a dog whistle.
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Answers
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B
C
D
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Answer:
A
Explanation:
The figure shows the electric field produced by a spherical charge distribution - this is a radial field, whose strength decreases as the inverse of the square of the distance from the centre of the charge:
More precisely, the strength of the field at a distance r from the centre of the sphere is
where k is the Coulomb's constant and Q is the charge on the sphere.
From the equation, we see that the field strength decreases as we move away from the sphere: therefore, the strength is maximum for the point closest to the sphere, which is point A.
This can also be seen from the density of field lines: in fact, the closer the field lines, the stronger the field. Point A is the point where the lines have highest density, therefore it is also the point where the field is strongest.