Current Density Example. Cloudflare Ray ID: 5d91fa627c90e112 Answer Save. Determine this current density using the current density formula. Why current is a scalar quantity but current density a vector quantity? Verify your number to create your account, Sign up with different email address/mobile number, NEWSLETTER : Get latest updates in your inbox, Need assistance? Scalar Quantities: The physical quantities which are specified with the magnitude or size alone are scalar quantities. actually, it's because current density is defined as the product of charge density and velocity for any location in space. All rights reserved. Copyright Notice © 2020 Greycells18 Media Limited and its licensors. Relevance. 6 Answers. The above is all being very pedantic with terminology about tensors. If you are at an office or shared network, you can ask the network administrator to run a scan across the network looking for misconfigured or infected devices. Why current is a scalar quantity but current density a vector quantity? This is a stupid terminology issue where people say that current is "not a vector" just because you don't get "total" current by adding individual currents, but any current density, in contrast, is a perfectly fine vector. You may need to download version 2.0 now from the Chrome Web Store. 10 years ago. $\begingroup$ Duplicate of Why is current a scalar quantity? Why is work a scalar quantity although force and displacement are vector quantities? Because scalars and vectors are tensors this means current and current density are both tensors. Exactly how treating area as a vector works here is somewhat fastidious and involves defining a normal vector to the surface with magnitude equal to the area of the surface element. For example, length, speed, work, mass, density, etc. What is the difference between the scalar quantity and vector quantity? This video explains the representation of electric field due to a single ch... Queries asked on Sunday & after 7pm from Monday to Saturday will be answered after 12pm the next working day. Current density is a vector quantity because it is defined as having magnitude equal to current through a very small unit area, the area being normal to the direction of flow of current and the direction along the direction of current. Potential energy is a vector or scalar quantity ? Is pressure a scalar or vector quantity ? Name the physical quantity whose si unit is Wb/m2, whether it is scalar or vector. Lv 6. And the reason is, because it is. Current represents the direction of the flow of charged carrier in the conductor and is considered as a scalar quantity. Your IP: 107.180.121.53 Ivan. When current is a scalar, What makes current density a vector? This video explains the basic properties of electric charges. Favourite answer. please state the reason of answer. Scalars and Vector Quantities. Despite being the ratio of two scalar quantities, current density is a vector. That is, it is the product of the charge density and velocity for any location in space. $\endgroup$ – ACuriousMind ♦ Mar 22 '16 at 10:19 Now that you are aware of the formula for calculation, take a look at the example below to get a clearer idea. In practice, you will very rarely hear physicists refer to scalars or vectors as tensors. Want a call from us give your mobile number below, For any content/service related issues please contact on this number. Current density is a vector quantity because it is defined as having magnitude equal to current through a very small unit area, the area being normal to the direction of flow of current and the direction along the direction of current. What is difference between Scalar and Vector . Completing the CAPTCHA proves you are a human and gives you temporary access to the web property. Why current is a scalar quantity but current density a vector quantity ? Solution – In this example, current (I) = 2 x 10-3 A = 10 x 10-3. Define electric field in terms of Coulomb's force. • Despite being the ratio of two scalar quantities, current density is a vector. Current density is a vector. Kindly Sign up for a personalized experience. Another way to prevent getting this page in the future is to use Privacy Pass. Actually current is not a scalar quantity because it can not completely defined by magnitude only, it is not a vector quantity also because it doesn't obey commutative and associative law of vector addition. Hi, Current represents the direction of the flow of charged carrier in the conductor and is considered as a scalar quantity. actually, it's because current density is defined as the product of charge density and velocity for any location in space. Contact us on below numbers. If you are on a personal connection, like at home, you can run an anti-virus scan on your device to make sure it is not infected with malware.